MOH Vanguard wasn't very good with the Wii control system. I was watching it on gamer T.V on sky. It was reported to 'float' skywards when trying to aim a few times (A bit like a mouse being over sensitive). Wether that was due to the person relaxing their muscles or the game not being well done I'm not sure. I hope this is resolved for other Wii FPS.
Good to see this site is still going